The official end date of my Program of study is 31 Dec and I applied for a bridge extension earlier. I received the extension last week. I am yet to receive a physical copy of the extended study permit. I plan to apply for PGWP as soon as I get official documents from the University next month. My SIN also expires on 31 Dec. Do I need to renew the SIN according to the expiry date of my extended SP or if I apply for PGWP and start working will it be fine?